Punching and riveting press



Jam. 1, 1929.

M. O. KUHN PUNCHING AND RIVETING PRESS 3 sheets-shed 1 Filed Oct. 19. 1927 INVENToR. mdx//w BY f5) l 15;. 74 ATTORNEY 52 Jan. 1, 1929.V M. O. KUHN PUNCHING AND RIVETING PRESS Filed Oct. 19, 1927 3 Sheets-Sheet 2 r ATTORNEY Jan. 1, 1929.

M. O. KUHN PUNCHING AND RIVETING PRESS Filed Oct. 19. 1927 3 Sheets-Sheet OINVENTOR.

um@ ef Patented dan. l, 1929.

reati? ria.

MAX O. KUHN, OF AKRON, OI-IO, .ASSIGNGRVTO FIRESTONE STEEL PRODUCTS COM- PANY, OF AKRON, QHIO, A. CORPORATON 0F OHIO.

PUNCHNG AND RVETING PRESS.

Original application filed Apri113, 1925,Seria1 No. 22,557'. Divided and this application iiled. October 19,

1927. Serial No. 227,215. v

This invention relates to punching and riveting presses and particularly to a press designed to first punch a hole in a metal object and to subsequently insert another object in said hole and upsetting or riveting it over to secure the second object to the iirst.

The machine, as shown and described, is adapted forrthe operations of punching valve hole in a telly or rim for wheels and securing a driving lug or sleeve on the telly or rim by rivetingv it thereto through said hole. 1t will be understood that the invention is capable of being adapted for many above.

The chief object oi' the invention is to provide a punching and riveting press capable ot quickly acting in succession on the work to iirst punch an aperture therein and to subsequently rivet a second object to the first through the aperture.

Another object is to provide improved means for positioning the work in any desired position in a punch press.

Another object is to provide in a punch press an improved stripper for the punch.

Another object is to provide in a punch press eliicient means for positioning a telly therein so that avalve hole may be punched therein intermediate of the spokes- The foregoing' and ancillary objects are obtained by the construction illustrated in the accompanying drawings and described in detail below. 1t willl be understood that the invention is not limited to the specific construction illustrated and described.

This application is a division of my orig inal lapplication Serial No. 22,557, filed JApril 13, 1925.

Of the accompanying drawings;

Figure 1 is a front elevation of a press embodying the invention;

Figure 2 is a plan thereof;

Figure 3 is a section on line 3 3 of Figure' 2;

Figure 4 is a detail section illustrating the action of the riveting press and die construction; and

Figure 5 is a transverse section of a telly having a driving lug secured through its valve aperture by a machine of the invention.

In the drawings, 10 is the upper platen uses other than the specific ones describec and 11 the lower platen of a suitable press. The platen 10 has a punch 12 secured-therein as by a set screw 13 operable through the platen 10, and slidable'on the punch 12 is a stripper plate lll. Arranged between plato 14e and the platen 10 is a sleeve 15 of highly resilient rubber normally urging plate 14 downwardly. rlhe plate 14 has r 16, 16 projecting downwardly therefrom on either side of punch 12 and normally below the lower end ot said punch.

Punch 12 is arranged to cooperate with a die 17 supported in alignment with said essure pins punch on platen 11, the die aperture being.'

in communication with an aperture 18 through platen 11 for conducting slugs away from the die 17. 1n order to position a telly indicated in dotted lines at 19 over the die 17 so that the valve aperture will be formed at the proper point on the telly, two positioning devices are employed.

To determine the position of the aperture transversely of the Jtelly, a pair ot gage bars 20, 2O are arranged on platen 11v respectivel in iront ot and to the rear of die 17. The bars 2O are mounted on a screw 24, which is journaled in a slide 21 adjustable forwardly and rearwardly over platen 11 by means of a screw 2la threaded 'through said slide and journaled on the platen 11 whereby the bars 2O may be shifted as a unit to center or offset the aperture transversely of the felly. In order that the centering or amount of offset may be readily determined, slide 21 has a scale'at 22 thereon ruled into divisions of an inch oppositely from a zero or central position, the scale cooperating with a mark on platen 11 as indicated at 23. Bars 20 are also movable toward and from each other on. platen 11 to vary their spacing so as to position tellies of diiferent widths in the press. For this purpose, right and left hand screw 24 has its respective right and lett hand portionsk respectivelyk threaded through bars 20.

In 'wheel fellies, it is customary to punch the valve aperture intermediate of the spokes. Thefellies come to the machine formed with the spoke cups indicated at 19a, 19a. Accordingly, the circumferential positioning ot telly-19 on the punch press over the die 17 is effected by a tapered pin 25 inclined substantiallyradially of a telly and threadedly received in a slide 26 adjustable manually forwardly or rearwardly in another slide 44 i inserted to adjust it perpendicularly to slide von platens 10 and 26. Slide 26 is comparatively loose in slide 44 and if guides 2O have been changed from their previous position, it is only necessary, after the proper adjustment of slide 44, .to insert pin 25 in spoke cups 19a and slide rim l19 forwardly or rearwardly until theA rim' drops between guides 20. I

In `front of the punch and die respectively 11, there is arranged an upsetting plunger 28 secured by a set screw 29 in vplaten 10, and vannpsetting die construction indicated generally by the numeral 30. The die 3() includes a supporting member 31 seated in a socket 32 in platen 11 and formed with an upstanding sleeve 90 through which extends a rod 34 having an upsetting die 35 secured "en its upper end, the'rod 34 being mounted on a compression spring 36 normally urging die 35 upwardly. Surrounding die 35 and sleeve 33 is a sleeve 37'normally urged upwardly by being seated on a sleeve 38 of rubber also surrounding sleeve 33 and seated on me` ber 31. Die 35 is formed with an annular upsetting surface :as shown at 39. Plunger 28 is formed as'best shown in Figure `1 with a 'portion 40 "adapted to be projected between spaced lugs 41, 41 of the drivin-g lug and portions 42, '42 "adapted to engage over the upper ends Jof the lugs. The driving lug is formed with an annular sleeve portion 43 adapted to pass through the valve aperture in felly 19 andthe lower end of which is adapted to be upset by die 35 in the manner illustrated in Figure 5.

The operation of thedevice which will be clear from the foregoing description may be briefly `described as follows:

The bars 2O and pin 25 being properly adjusted, as will be understood,"tlie felly 19 to be punched is placed between bars 20 with one spoke lcup 19a on pin 25. Upper platen 10 'is 'then depressed Iin any suitable 1nanner, pressure pins 16 first engaging the felly, sleeve 15 being com-pressed and punch 12 then passing through the felly. The platen 10 is -then'elevated, punch 12 being first retracted,'pins 16 stripping the felly therefrom, and finally, when compression 'in sleeve 15 is relieved, pins 16 are reti'acted.l

The felly 19 is 'now lifted from over die 17 onto sleeve 37 and the driving lug is mounted "on the felly, sleeve 43 thereof being vpassed through the valve hole. As shown `in Figure 3, sleeve 43 will engage surfaces 39 of die 35 which isheld elevated by spring 36 to properly center the lug with respect to die 35. Platen 10 is again depressed, carrying plunger 23 into engagement with lugs 41 and as motionvis continued 'downwardly, sleeve 37 is effective first to snugly urge the felly and driving lug together. Sleeve 37 Awill 'then be depressed against the action of sleeve 38 of rubber which will flow laterally in the space shown in socket 32 (see Figure 4) and die 35 will be forced down uponr sleeve 33 and will be then effech tive to upset the metal of the sleeve 43 of the driving lug (Figure 4) to secure the same to the felly. Upon elevation of platen i 10, the parts will return to the position shown in Figure 3. l

lt will 'be seen from the foregoing that the operations of punching of valve holes and the securing of driving lugs therein are easily and rapidly performed in sequence in a 'single press unit. The saine or similar operations could, of course, be performed in like manner on other articles. Accordingly, it is apparent that modifications of the invention may be resorted to without `departing from the spirit thereof or the scope of the appended claims.

What is claimed is l 1. In a press for punching valve holes in wheel fellies, lmeans for positioning -a felly in said press including a member adjustable transversely of the felly for engaging a side thereof, anda member adjustable radiallyof Vthe felly for-engaging a spoke cup therein.

2. AIn a press for vpunching valve holes in wheel fellies, means for positioning a felly in said press ineludingf'a member adjustable transversely of the felly for r*en* gaging a side thereof, and -a-member adiustable circuinf'erenti'ally:of the felly for. engaging a spoke cup therein.

'3. In a press for punching valve holes in wheel fellies, means for positioning va felly in said press including a member adjustable transversely of the felly fer engaging a side thereof, anda i'nemberwadjustable radially and cirouinferentially of the felly for engaging a. spoke-'cup therein.

4. In a press for punching valve holes in fellies, means for transversely positioning a felly including a pair offspaeed bars, one on each side ofthe 'diei of thetpressand movable from and toward each other, `and means for ci'rcumferentially positioning the felly including an element adjustable circumferentially of the felly and adapted to engage a spoke cup rthe-rein.

5. In a press for punching -valve k'holes in fellies, means for transversely position.-

ing a felly including a pair of spaced bars, one on each side of the die of thepress `and movable iii/thev same direction relative-to the die of the press, and `means for circumferentially positioning the felly including an lOll element adjustable circumferentially of the felly and adapted to engage a. spoke cupv therein.

G. In a press for punching valve holes in fellies, means for transversely .positionalso movable simultaneously in the same. direction relative to the die of the press, and means for circumferentially positioning the felly including an element adjustable circumferentially of the felly and adapted to y engage a. spoke cup therein.

MAX o. KUHN. 

